# KETOSCAN

> Portable breathalyzer for measuring blood ketone concentration and body fat decomposition. (iPhone/iPad app by Sentech Korea Corp..)

- Source: https://appshunter.io/ios/app/ketoscan/id1446527194 (this page in markdown: same URL + `.md`)
- Developer: [Sentech Korea Corp.](https://appshunter.io/developer/1446527193)
- Category: Health & Fitness
- Price: Free
- Rating: 2.73/5 from 15 App Store ratings · 19 written reviews indexed
- Age rating: 12+
- Requires: iOS 12.0 · 53 MB
- Languages: Czech, English, German, Italian, Japanese, Korean, Polish, Russian, Spanish, Swedish
- Released: 2019-01-03
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/ketoscan/id1446527194/reviews.md

## What is KETOSCAN?

Equipped with a high-precision sensor, it measures the state of the ketone by simple breathing

The ketone meter.

1. What is KETOSCAN?
KETOSCAN is the first portable acetone gas analyzer in Korea,
Acetone, which is one of the ketone bodies produced when decomposing body fat, flows through the blood vessels and is discharged through the lungs through the respiration. It is a product that can measure the blood ketone concentration and the body fat decomposition rate by measuring the concentration of the breathing acetone gas.

2. Who needs a KETOSCAN?
- Low Carb High Fat Diet (LCHF / Ketogenic Diet) When you need to measure your ketone production!
- When you lose body fat through low-calorie diet, check for the scientific diet check that only the body fat is decomposed not the muscle!
- For the purpose of ketosis check!

3. Integration with the Health app
 - KETOSCAN read data from health app such as 
'Active Energy',  'Dietary Energy', 'Weight'
 - It is used for your records.
 - You can allow to read at Settings -> Privacy -> Health -> KETOSCAN

## Key features

- Breath ketone measurement
- Body fat decomposition rate
- Ketogenic diet support
- Health app integration
- Scientific diet tracking

## Recent user reviews (10 of 19)

All indexed reviews: https://appshunter.io/ios/app/ketoscan/id1446527194/reviews.md

### 1/5 — App doesn’t work.

*2026-02-21*

I’m not sure what the behavior of this app is supposed to be but logon fails and thus the app is a non starter. For me, this has been on going for at least 3 months and it is integral to the overall process and experience.

### 1/5 — Terrible App

*2025-08-06*

As CuttyNYC said 2 years ago;
The device is great, the app is terrible. I’m sad that the app has been this bad for over 2 years. That suggests they aren’t trying to make it any better.

### 5/5 — Love this

*2024-06-14, version 10.8*

I got worried when I saw a previous (and only) review but any bugs must have been fixed because this works perfectly.  Love it!

### 1/5 — Do not buy this

*2023-10-19, version 10.8*

Totally useless.  What a rip off.  The app doesn’t pair the device.  I will try to return my device. This is a CON.

### 2/5 — Worked great, now crashes on launch

*2023-08-18*

8/18/2023 update shows logo for a couple of seconds then crashes.

### 1/5 — Worst App

*2023-01-27*

The device is very good. This app is absolutely horrifying considering how good the device is.

### 3/5 — What is the “body fat” number?

*2022-05-25, version 9.2*

It works ok and pairs to the device reliably. It does put up lots of annoying little confirmation dialogs but that’s not a showstopper.

My main concern is that you have to enter your body fat percentage. As the developer is Korean, I can’t tell if this is the British body fat measurement, or the US version which is completely different, or something else entirely.

The UK contact for the meter does not reply to emails.

### 5/5 — Helpful

*2021-08-06*

I’m really glad I purchased the ketoscan mini. I’m realizing I didn’t really have as much of a handle on understanding ketosis as I thought I did. Monitoring is key. And I love that I can do that without pricking myself.

I’d like to have a lot more information on how the keto levels in the app were  arrived at. I’d also very much appreciate a dark mode for this app (get rid of the the bright white screens). Thanks!

### 5/5 — Great

*2020-09-18, version 6.0*

App works fantastic. The Ketoscan mini has been great!

### 1/5 — App is broken

*2020-06-20, version 5.6*

Cant sign in even as a guest

## Frequently asked questions about KETOSCAN

### What is KETOSCAN used for?

KETOSCAN is a portable acetone gas analyzer that measures blood ketone concentration and body fat decomposition rate by analyzing acetone in your breath. It's designed for individuals on ketogenic diets or those monitoring fat loss.

### Who would benefit from using KETOSCAN?

This device is beneficial for those on Low Carb High Fat (LCHF) or ketogenic diets, individuals aiming to lose body fat without losing muscle, and anyone wanting to check their ketosis status.

### Can KETOSCAN connect with other health apps?

Yes, KETOSCAN can read data from the Health app, including 'Active Energy', 'Dietary Energy', and 'Weight', to help you keep records. You can manage these permissions in your device's privacy settings.

### What is the accuracy of KETOSCAN?

The description highlights a 'high-precision sensor' for measuring ketone levels. Specific accuracy percentages are not provided in the app data.

### Is KETOSCAN available on Android devices?

Based on the provided data, KETOSCAN is supported on 'iphone' and 'ipod'. Support for Android devices is not mentioned.

### How often is KETOSCAN updated?

The latest version is 11.1, and the app was last updated on September 4, 2025. This indicates a relatively recent update, though the frequency of updates is not explicitly stated.

### What is the user sentiment for KETOSCAN?

The app has a rating of '2.7 stars from 15 ratings'. This suggests a mixed to negative user sentiment based on the limited number of reviews.

### What is the age rating for KETOSCAN?

KETOSCAN has an age rating of '12+'. This means it is considered suitable for users aged 12 and older.

## Version history (last 5 releases)

### 11.1 — 2025-09-04

2025-09-04 v11.1

1. The certification marks are displayed

### 11.0 — 2024-07-05

2024-07-05 v11.0

1. Notice popup by country

### 10.8 — 2023-08-18

2023-08-18 v10.8

1. Bug fixed

### 10.7 — 2023-08-17

2023-08-17 v10.7

1. Calibration popup error fixed

### 10.6 — 2023-05-23

2023-05-23 v10.6

1. Firmware update error fixed

## Apps similar to KETOSCAN

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Ketonix](https://appshunter.io/ios/app/ketonix/id1239051593) | 2.3 (6) | Free | Health & Fitness |
| [Lumen - Metabolic Coach](https://appshunter.io/ios/app/lumen-metabolic-coach/id1395149502) | 4.6 (6,522) | Free | Health & Fitness |
| [Slimpal](https://appshunter.io/ios/app/slimpal/id1574164618) | 2.5 (30) | Free | Health & Fitness |
| [Signos](https://appshunter.io/ios/app/signos/id1534943157) | 4.6 (969) | Free | Health & Fitness |
| [bello: Design a healthy life](https://appshunter.io/ios/app/bello-design-a-healthy-life/id1485202681) | 3.0 (55) | Free | Health & Fitness |
| [KetoDiet: Fasting & Meal Plans](https://appshunter.io/ios/app/ketodiet-fasting-and-meal-plans/id575004207) | 4.4 (2,445) | Free | Health & Fitness |

## More apps by Sentech Korea Corp.

- [i-SOBER](https://appshunter.io/ios/app/i-sober/id1447339897)
- [KETOSCAN LITE](https://appshunter.io/ios/app/ketoscan-lite/id1526085422)

All apps by Sentech Korea Corp.: https://appshunter.io/developer/1446527193

## Related topics

[ketoscan](https://appshunter.io/ios/topics/ketoscan) · [ketoscan lite](https://appshunter.io/ios/topics/ketoscan-lite)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*